| 摘要 |
<p>A dynamo-electric machine in which occurrence of poor insulation incident to oxidation of a stator core is suppressed without decreasing the output, and temperature rise of the stator is suppressed by transmitting heat generated from the stator coil efficiently to the frame. The stator core is constituted by laminating and integrating magnetic thin plates and has a tubular outer circumferential surface, wherein a fitting groove is formed in the inner circumference of an opening of the frame. The fitting groove is defined by an annular axial surface of a flat surface intersecting the axis of the stator core perpendicularly, and by a radial surface of a tubular surface having the axis of the stator core as a center. The metal surfaces of magnetic thin plate at the opposite axial ends of the stator core are pressure clamped under a tight contact state over the entire circumferences of the respective axial direction surfaces of a pair of frames.</p> |
